Aspect Ratio Calculator
Resize images and videos without the weird stretching. Enter your original dimensions and one new value, and the other one fills in automatically.
Original Size
New Size
Type in one field and the other updates on the fly.
Aspect Ratio
? : ?
Quick Ratios
Common Resolutions
How the math works
Pretty straightforward. If you know the original dimensions and one new dimension, the formula is:
About this tool
If you've ever resized an image and ended up with something that looks squished or stretched, you probably weren't keeping the aspect ratio. This calculator takes the guesswork out of it. Punch in the original width and height, then start typing a new width or height and it'll fill in the other value as you go. Handy for responsive design, video editing, thumbnail generation, or really any time you need to scale something without distorting it.